I was having a problem with one of my A3s. I tried everything to get it hashing. Last resort was to backup another one and reload the non-working ones firmware with the backup from a working unit. Could never get unit to flash green, and deep in the logs I noticed some problem with one of the fans so I replaced it. Booted it up and now I am flashing green, but NO hashing. I looked at system tab and.... what? It says it has L3 firmware. I tried flashing with a new A3 backup from another working unit, and it completes the process. I look back at system tab and wtf, it still shows having L3 firmware. Anyone have any thoughts on how to resolve this issue?